The generator matrix

 1  1  1  1  1  1  1  1  X  X  X  X  2  1  0  1  2 2X  1
 0 2X+2 2X  2  0 2X+2 2X  2 2X+2  2  0 2X 2X+2  0  2 2X  2  2  0

generates a code of length 19 over Z4[X]/(X^2+2) who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+2x^18+54x^19+3x^20+1x^22+2x^23+1x^26

The gray image is a code over GF(2) with n=152, k=6 and d=72.
This code was found by Heurico 1.16 in 1.05e-007 seconds.